General characters of Phycomycetes
Phycomycetes
(1) Either mycelium absent /rudimentary (e.g.Synchytrium ,Olpidium ) or well-developed (e.g. Pythium, Mucor, etc ).
(2) Mycelium is non-septate & coenocytic .
(3) Asexual reproductive units are endogenously formed sporangiospores (zoospores e.g. Synchytrium or aplanospores )
(4) In Oomycetes sexual reproduction is oogamous ,e.g. Pythium,Phytophthora,etc & isogamous in Zygomycetes .
(5) Zoospores are flagellated and motile .
(6) Dikaryophase is absent due to the fact that karyogamy follows plasmogamy immediately .
(7) Zygote produced sexually is simple and unicellular .
Comments
Post a Comment